intel
Brand6/12
Cores/Threads3.4GHz
Base Clock140W
TDPIntel Core i7-6800K
intel
Brand6/6
Cores/Threads2.8GHz
Base Clock65W
TDPIntel Core i5-8400
Intel Core i7-6800K
Intel Core i7-6800K
$434 • May 2016
Intel Core i5-8400
$ • Oct 2017
Intel Core i5-8400
Specs Comparison
| Specification | Intel Core i7-6800K | Intel Core i5-8400 |
|---|---|---|
| Cores | 6 | 6 |
| Threads | 12 | 6 |
| Base Clock | 3.4 GHz | 2.8 GHz |
| Boost Clock | 3.6 GHz | 4.0 GHz |
| Multiplier Unlocked | ✓ Yes | ✓ Yes |
| Multiplier | 34 X | 28 X |
| TDP | 140 W | 65 W |
| Memory Support | DDR4 | DDR4 |
| Cache L1 | 64 KB | 64 KB |
| Cache L2 | 0.25 MB | 0.25 MB |
| Cache L3 | 15.00 MB | 9.00 MB |
| Integrated GPU | N/A | N/A |
| Architecture | Core i7 (Broadwell-E) | Core i5 (Coffee Lake) |
| Process Size | 14nm | 14nm |
| Socket | intel socket 2011-3 | intel socket 1151 |
| Foundry | Intel | Intel |
| Die Size | 246 mm² | N/A |
| PCI Express | Gen 3, 28 Lanes(CPU only) | Gen 3, 16 Lanes(CPU only) |
| Transistors | 3400 million | N/A |
| Max Temperature | N/A | N/A |
Comparison in Tools
Cinebench R23
Industry-leading 3D rendering benchmark that measures real-world CPU processing power and performance
Single Core Performance
Intel Core i7-6800K
Intel Core i5-8400
Multi Core Performance
Intel Core i7-6800K
Intel Core i5-8400
Geekbench 5
Popular cross-platform CPU benchmark measuring single and multi-core performance in real-world tasks
Single Core Performance
Intel Core i7-6800K
Intel Core i5-8400
Multi Core Performance
Intel Core i7-6800K
Intel Core i5-8400
PassMark
PassMark CPU Mark is a popular synthetic benchmark that scores overall CPU performance (higher is better).
Overall CPU Score
Intel Core i7-6800K
Intel Core i5-8400
Blender Benchmark
Measures CPU rendering speed in Blender, reported in frames per second (FPS). Higher FPS means faster completion of 3D rendering tasks.
Blender FPS
Intel Core i7-6800K
Intel Core i5-8400
Comparison in Games
No benchmark data available for this combination of CPUs yet.
We're working on collecting performance data for this combination of CPUs. Please check back later.
Intel Core i7-6800K Wins!
Based on 4 synthetic benchmarks
Intel Core i7-6800K
INTEL • 6/12 • 3.4GHz
Intel Core i5-8400
INTEL • 6/6 • 2.8GHz
Check out more comparisons
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